forked from EVOgeek/Vmeda.Online
54 lines
1.5 KiB
TypeScript
54 lines
1.5 KiB
TypeScript
// (C) Copyright 2015 Moodle Pty Ltd.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import { ElementController } from './ElementController';
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/**
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* Possible types of frame elements.
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*/
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export type FrameElement = HTMLIFrameElement | HTMLObjectElement | HTMLEmbedElement;
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/**
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* Wrapper class to control the interactivity of a frame element.
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*/
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export class FrameElementController extends ElementController {
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private frame: FrameElement;
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private placeholder: Node;
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constructor(element: FrameElement, enabled: boolean) {
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super(enabled);
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this.frame = element;
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this.placeholder = document.createComment('disabled frame placeholder');
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enabled || this.onDisabled();
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}
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/**
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* @inheritdoc
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*/
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onEnabled(): void {
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this.placeholder.parentElement?.replaceChild(this.frame, this.placeholder);
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}
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/**
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* @inheritdoc
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*/
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onDisabled(): void {
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this.frame.parentElement?.replaceChild(this.placeholder, this.frame);
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}
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}
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